Intermediate cefdinir salts
US7405294B2 · kind B2 · utility
1Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2003 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are salts of the general formula (I)wherein R1, R2 and B are defined in the description. These salts are useful intermediates for the preparation of cefdinir. Also, disclosed are processes for the preparation thereof from the compounds of the general formula (II) and (III).Further, disclosed is a method of producing cefdinir from the salts of the general formula (I) including the steps of removing protecting groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.